Justin’s place is a great accommodation in the heart of Sathorn. It’s located in walking distance to Chong Nonsi - BTS Station. If you are really lazy you also can take BRT Bus to go there. You will find a 24/7 supermarket just downstairs in front of the building. The hotel pool and skybar in the building, which you are allowed to use, are amazing. Good place to relax from busy and crowded Bangkok.
You will find a lot of restaurants just around the corner. The business buildings of Sathorn and also the bars in the area can be reached easily.
I have stayed 3 months (from November to January) in Justin’s apartment and never regret it. Definitely recommend his place for a stay, especially for longtime visitors.